3b no power after 5500 rpm

[Pirvu Eugen]

Hello guys! I have this problem wich hapend after changing the gearbox.
The engine is running good and building pressure 1.4 bar (Mihnea's generic chip) but from 5.5k upwards is filling like is remaining without air or something. The fuel pressure is ~4.5 bar. The intake pressure is ok 1.3 1.4 bar. What do you think?
Thanks!
Eugen

[LHD_Kid]

Must have disturbed something doing the change.....
lets hope its a boost leak and nothing more difficult to tie down....!
Chris

[DJones]

Did you take the flywheel sensors of so as not to damage them when changing the gearbox?

Might be a place to look.